Subtract multiples of 100's from three digit numbers

We've previously seen how to subtract multiples of 10 from a two digit numbers.

Subtracting multiples of 100 form a three digit number is a similar process, but this time we have to consider three place values; The hundreds, the tens, and the units.

To subtract multiples of 100 from a three digit number we can take the same two approaches. First we can take a step in the negative direction by 100, for every 100 in our multiple of 100.

So if we have the number 542 - 200, we'll need to take 2 steps of 100 in the negative direction.

542 - 100 = 442, then 442 - 100 = 342.

We can also line up our place values, hundreds, tens, and units and then subtract our ones, tens, and hundreds to find our answer.

 

	Hundreds	Tens	Units
	$5$5	$4$4	$2$2
-	$2$2	$0$0	$0$0
=	$3$3	$4$4	$2$2

 

Watch the following video to see how to do this.

 

Worked Examples

Example 1

Example 2

Example 3